This is the second Canon product we have purchases and it does an incredible job, the keys are large enough to make the operation of this calculator easy to use and the digaital readout is easy to read. Another feature that I like is the ability to turn on and off the printer ribbon. If this one is like the other machine that we have, the original printer ribbon has done a great job and is still going strong. I also use the profit margin feature on a daily basis in order to keep my business profitable.